Swage tool

Patent metadata

Field	Value
Publication number	US-11717876-B2
Application number	US-202117166001-A
Country	US
Kind code	B2
Filing date	Feb 3, 2021
Priority date	Jun 29, 2017
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A swage mechanism operable to expand an inner diameter of tubing including a housing defining a longitudinal axis, and a plurality of jaws coupled to the housing and movable radially outward relative to the longitudinal axis for selectively gripping an interior of the tubing. The jaws each include a first cam surface. The swage mechanism further includes a ram having a cylindrical portion and a frusto-conical head portion, and an arbor that is coupled to the housing and having a second cam surface. The frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing. The second cam surface of the arbor is engageable with the first cam surface of each of the jaws to move the jaws toward or away from the longitudinal axis, wherein the second cam surface moves in a direction along the longitudinal axis.

First claim

What is claimed is:

1. A swage mechanism operable to expand an inner diameter of tubing, the swage mechanism comprising:
a housing defining a longitudinal axis;
a plurality of jaws coupled to the housing and movable radially outward relative to the longitudinal axis for selectively gripping an interior of the tubing, wherein the jaws each include a first cam surface;
a ram including a cylindrical portion and a frusto-conical head portion, wherein the frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing; and
an arbor that is coupled to the housing and having a second cam surface,
wherein the second cam surface of the arbor is engageable with the first cam surface of each of the jaws to move the jaws toward or away from the longitudinal axis, wherein the second cam surface moves in a direction along the longitudinal axis.

2. The swage mechanism of claim 1 , wherein the jaws are disposed circumferentially around the arbor.

3. The swage mechanism of claim 2 , wherein the arbor is movable between a first position, in which the jaws are displaced toward the tubing, and a second position, in which the jaws are permitted to be displaced away from the tubing.

4. The swage mechanism of claim 3 , further comprising a biasing member biasing the arbor toward the second position, wherein the biasing member is disposed within the ram.

5. The swage mechanism of claim 1 , wherein the jaws each include teeth that are capable of biting into the interior of the tubing to inhibit the tubing from moving relative to the jaws.

6. The swage mechanism of claim 1 , further comprising a cap coupled to the housing, wherein the cap includes apertures through which the jaws extend, and wherein the cap limits an extent to which the jaws are moveable in a radially outward direction relative to the housing.

7. The swage mechanism of claim 6 , wherein the cap further includes a shoulder that inhibits the jaws from being removed from the housing.

8. The swage mechanism of claim 1 , wherein the second cam surface of the arbor includes a frusto-conical shape.

9. The swage mechanism of claim 1 , further comprising a ribbed surface proximate a first end of the arbor configured to be grasped by a swaging tool, wherein the second cam surface is proximate an opposite, second end of the arbor.

10. A swage mechanism operable to expand an inner diameter of tubing, the swage mechanism comprising:
a housing defining a longitudinal axis;
an arbor extending from the housing along the longitudinal axis, a first end of the arbor being graspable by a swaging tool;
a plurality of jaws coupled to the housing and moveable radially outward relative to the longitudinal axis for selectively gripping an interior of the tubing;
a wedge disposed at a second end of the arbor and in slidable contact with the plurality of jaws for moving the jaws radially outward relative to the longitudinal axis in response to movement of the arbor along the longitudinal axis away from the jaws; and
a ram slidably mounted on the housing and having a cylindrical portion and a frusto-conical head portion, wherein the frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing.

11. The swage mechanism of claim 10 , wherein the jaws each include a first cam surface, and wherein the wedge includes a second cam surface that is engageable with the first cam surfaces of the respective jaws to radially move the jaws relative to the longitudinal axis.

12. The swage mechanism of claim 11 , wherein the arbor is movable in a direction along the longitudinal axis between a first position, in which the wedge displaces the jaws outward toward the tubing, and a second position, in which the jaws are permitted to be displaced inward and away from the tubing.

13. The swage mechanism of claim 12 , further comprising a biasing member biasing the arbor toward the second position.

14. The swage mechanism of claim 13 , wherein the biasing member is disposed within the ram adjacent the first end of the arbor.

15. The swage mechanism of claim 11 , wherein the second cam surface of the arbor includes a frusto-conical shape.

16. The swage mechanism of claim 10 , wherein the jaws each include teeth that are capable of biting into the interior of the tubing to inhibit the tubing from moving relative to the jaws.

17. The swage mechanism of claim 10 , further comprising a cap coupled to the housing, wherein the cap includes apertures through which the jaws extend, and wherein the cap limits an extent to which the jaws are moveable in a radially outward direction relative to the housing.

18. The swage mechanism of claim 17 , wherein the cap further includes a shoulder that inhibits the jaws from being removed from the housing.

19. The swage mechanism of claim 10 , wherein the jaws are disposed circumferentially around the arbor.

20. The swage mechanism of claim 10 , wherein the arbor includes a ribbed surface proximate the first end configured to be grasped by the swaging tool.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Myrhum Jr James O
• Fang Noah Z

Classifications

• B21D41/02 Primary

  Enlarging · CPC title

• B21D39/046

  Connecting tubes to tube-like fittings · CPC title

• B21D39/20

  with mandrels, e.g. expandable · CPC title

• B21D41/026 Primary

  by means of mandrels · CPC title

• B21D31/04

  Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal (B21D47/00 takes precedence; enlarging tube ends B21D41/02) · CPC title